There are 55 such numbers as follows:
18 36 54 72 90 108 126 144 162 180 198 216 234 252 270 288 306 324 342 360 378 396 414 432 450 468 486 504 522 540 558 576 594 612 630 648 666 684 702 720 738 756 774 792 810 828 846 864 882 900 918 936 954 972 990 Total = 55
